1330323221 has 4 divisors (see below), whose sum is σ = 1330473600. Its totient is φ = 1330172844.

The previous prime is 1330323199. The next prime is 1330323251. The reversal of 1330323221 is 1223230331.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1330323221 - 2⁶ = 1330323157 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1330323193 and 1330323202.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1330323251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61031 + ... + 79908.

It is an arithmetic number, because the mean of its divisors is an integer number (332618400).

Almost surely, 2^1330323221 is an apocalyptic number.

It is an amenable number.

1330323221 is a deficient number, since it is larger than the sum of its proper divisors (150379).

1330323221 is an equidigital number, since it uses as much as digits as its factorization.

1330323221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 150378.

The product of its (nonzero) digits is 648, while the sum is 20.

The square root of 1330323221 is about 36473.5962169896. The cubic root of 1330323221 is about 1099.8135278951.

Adding to 1330323221 its reverse (1223230331), we get a palindrome (2553553552).

The spelling of 1330323221 in words is "one billion, three hundred thirty million, three hundred twenty-three thousand, two hundred twenty-one".